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This module is responsible for creating the basic Pylons WSGI
application (PylonsApp). It’s generally assumed that it will be called
by Paste, though any WSGI server could create and call the WSGI app as
well.

This basic WSGI app is provided should a web developer want to
get access to the most basic Pylons web application environment
available. By itself, this Pylons web application does little more
than dispatch to a controller and setup the context object, the
request object, and the globals object.

Additional functionality like sessions, and caching can be setup by
altering the environ['pylons.environ_config'] setting to
indicate what key the session and cache functionality
should come from.

Resolving the URL and dispatching can be customized by sub-classing
or “monkey-patching” this class. Subclassing is the preferred
approach.